Clamp.



PATENTED MAR. 22, 1904.. W. B. BENNETT. CLAMP.

APPLICATION FILED MAY 12, 1903.

y No. 754,962.

N0 MODEL.

frans w. Pnoraumq. wmnomn. n. c.

UNITED STATES Patented March 22, 1904.

PATENT OFFICE.

CLAMP.

SPECIFICATION forming part of Letters Patent No. 754,962, dated March22, 1904.

Application iiled May 12,1903. Serial No. 156,817. (No model.)

To ad whom it may concern:

Be it known that I, WILLIAM BAKER BEN- Nn'r'r, a citizen of the UnitedStates, residing at Grand Rapids, in the county of Kent and State ofMichigan, have invented certain new and useful Improvements in Clamps,of which the following is a speciication.

My invention relates to improvements in clamps, and refers particularlyto a clamp specially adapted for woodworkers use for clamping wood to beglued or otherwise worked upon, although the clamp may be used for anypurpose where it would perform its functions in an efficient manner.

One object of my invention is the provision of a clamp capable of beinginstantly brought into engagement with the object to be clamped andwhich will secure the object against any movement, thus saving time andpromoting efliciency. 1

Another object of my invention is the provision of a clamp which will bequick in action, reliable in operation, and which will possess merit inpoint of simplicity and durability, which can be produced at a smallprice, and which will be entirely practical in every respect.

With these objects in view my invention consists of a clamp embodyingnovel features of construction and combination of parts substantially asdisclosed herein.

Figure 1 represents a side view of my clamp with the adjusting orclamping screw shown in vertical position, with the threads engaging thethreads of the threaded collar. Eig. 2 represents a central longitudinalsectional View, the clamping-screw being free and capable of a slidingmovement in the collar or sleeve; and Fig. 3 represents a verticaltransverse sectional view through the bearingblock, collar, andclamping-screw.

In the drawings the letter A designates the base strip or support of myclamp, which is provided on its under face with a longitudinal groove orchannel B, in which fits the lugs C on the inclined embracing-loops D,said loops embracing and closely fitting the base-strip, and one of theloops is further provided with a spring-strip E, which bears in the saidgroove and prevents slipping of the loop.

One of the inclined loops is formed with an upright or standard F, whichis provided with a cavity Gr, in which fits an abutment-strip H, and theother loop is formed with an open or bail-shaped vertical standard J,adapted to receive the wings K on the two-part bearingblock L, saidblock having its meeting edges M recessed and shouldered, as shown, tomake a neatvsnug joint. The said bearing-block is formedwitharound borehaving screw-threads N, with which engage the exterior threads O on thecollar or sleeve P, said collar or sleeve being also provided with theinterior threads Q, with which are adapted to engage the threads R onthe clamping-screw S. To one end of the clamping-screw is attached ahandle or wheel T, and the other end is formed with a ball U, whichengages the bearing V in the clamping head or block W, and the saidclamping-screw has the two opposite fiat sides X, the purpose of whichis to permit the screw to be moved quickly to bring the clampingheadthereon against the object, and when this has been done it is simplynecessary to revolve the screw and the threads will engage the threadsof the collar and the binding action will be instantly produced and theobject be retained fast.

In operation it will be understood that the object to be clamped isplaced against the abutment-strip of the standard and the screw is slidin the collar until it comes against or near the object, when by simplyturning the wheel the screw will engage the screw-collar and the objectwill be clamped and iirmly secured between the standard and theclampingblock of the screw. l

It will thus be seen that I produce aclamp which can be used for anypurpose where a quick-acting and reliable clamp is desired, and whichwill prove specially useful and desirable for use upon woodwork.

I claim- 1. In a clamp, the combination of a base or support, a standardmounted thereon and forming an abutment, an open standard also mountedon the support, a sectional bearingblock in said standard, a threadedcollar mounted in said bearing-block and a clamping-screw having iiatsides to slide in said collar and threads to engage the threads of thecollar to effect the binding, said standards each having a dependingloop embracing the support and securing said standards.

2. In a clamp, the combination of a support, the pair of loops ttingupon said support, the standard formed on one of the loops and providinga stop, the open standard formed on the other loop, the bearing-blockmounted in said standard, the collar in the bearingbloek, the screwhaving fiat sides and thread, the handle on one end of the screw and thead-

